1 /* 2 * Copyright (C) 2007 Apple Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of 14 * its contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY 18 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 19 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 20 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY 21 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 22 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 23 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 24 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #ifndef WindowMessageBroadcaster_h 30 #define WindowMessageBroadcaster_h 31 32 #include <wtf/HashMap.h> 33 #include <wtf/HashSet.h> 34 35 namespace WebCore { 36 37 class WindowMessageListener; 38 39 class WindowMessageBroadcaster { 40 WTF_MAKE_NONCOPYABLE(WindowMessageBroadcaster); 41 public: 42 static void addListener(HWND, WindowMessageListener*); 43 static void removeListener(HWND, WindowMessageListener*); 44 45 private: 46 typedef HashSet<WindowMessageListener*> ListenerSet; 47 48 static LRESULT CALLBACK SubclassedWndProc(HWND, UINT, WPARAM, LPARAM); 49 50 WindowMessageBroadcaster(HWND); 51 ~WindowMessageBroadcaster(); 52 53 void addListener(WindowMessageListener*); 54 void removeListener(WindowMessageListener*); 55 const ListenerSet& listeners() const { return m_listeners; } 56 57 void destroy(); 58 void unsubclassWindow(); 59 60 WNDPROC originalWndProc() const { return m_originalWndProc; } 61 62 HWND m_subclassedWindow; 63 WNDPROC m_originalWndProc; 64 ListenerSet m_listeners; 65 }; 66 67 } // namespace WebCore 68 69 #endif // WindowMessageBroadcaster_h 70
